Locked in a tight race, incumbent President Rouhani invokes his challenger’s role in political executions. The supreme leader, Ayatollah Khamenei, has called for high voter turnout Friday, but that carries risks.

The main coin of intelligence-sharing, especially in the fight against terrorism, is trust. By divulging sensitive information to his Russian guests, experts warn, Trump likely made US partners less trusting of him.

The new French president has made economic reform a top priority in his country – something that Germany has long demanded. Now Berlin is indicating a willingness to meet Macron in the middle, by using German resources to help his project.

The San people of southern Africa seek to encourage mutually beneficial collaborations with scientists with an official code of research ethics. Can lessons from past conflicts help bypass future battles?

The opening of the region’s first joint scientific research center brings together Israelis, Iranians, Palestinians, Turks, and others for work on a new particle accelerator. Sometimes peace starts through universal activities like science, arts, and sports.